First-time-in-Human (FTIH) Study to Evaluate Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of Single (in Both Fed and Fasted States) or Repeat Doses of GSK3358699

NCT03426995 | Terminated Phase 1 Results

• 2 other identifiers: 2075462017-003997-15
• Study Type: interventional
• Target: 48
• Locations: 1 country
• Sites: 1

Brief Summary

This FTIH study, intends to identify the doses of GSK3358699, which are well tolerated by the subjects whilst delivering a robust pharmacodynamic (PD) response. This study will evaluate the safety, tolerability, pharmacokinetic (PK) and PD profile of single (in both fed and fasted states) and multiple ascending doses of GSK3358699 in healthy male subjects within a pre-defined and controlled pharmacodynamic and pharmacokinetic range for each cohort. It also intends to understand the effect of GSK3358699 on systemic markers of inflammation following low dose in vivo lipopolysaccharide (LPS) or Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF) challenge and local inflammation in cantharidin-induced blisters. The study has been carefully designed to explore the in vivo biology of the target and the potential for the study drug to become a transformative medicine for subjects in multiple immuno-inflammatory disease indications.

Conditions

Arthritis, Rheumatoid

Outcome Measures

Primary Outcomes (24)

• Part A: Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)

  An adverse event (AE) is any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. SAE is defined as any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect, important medical events that may jeopardize the participant or require medical or surgical intervention to prevent one of the outcomes listed before. Safety Population consisted of all randomized participants who took at least 1 dose of study treatment.

  Up to Day 193

• Part B: Number of Participants With AEs and SAEs

  An AE is any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. SAE is defined as any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect, important medical events that may jeopardize the participant or require medical or surgical intervention to prevent one of the outcomes listed before.

  Up to Day 30

• Part C: Number of Participants With AEs and SAEs

  An AE is any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. SAE is defined as any untoward medical occurrence that, at any dose results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect, important medical events that may jeopardize the participant or require medical or surgical intervention to prevent one of the outcomes listed before.

  Up to Day 49

• Part A: Number of Participants With Worst Case Chemistry Results by Potential Clinical Importance (PCI) Criteria Post-Baseline Relative to Baseline

  Blood samples were collected for analysis of clinical chemistry parameters. PCI ranges were \<30 grams per liter (g/L) (albumin), \<2 or \>2.75 millimoles/L (mmol/L) (calcium), \>1.3\* upper limit of normal (ULN) mmol/L (creatinine), \<3 or \>9 mmol/L (glucose), \<3 or \>5.5 mmol/L (potassium), and \<130 or \>150 mmol/L (sodium). Participants were counted in worst case category that their value changes to (low, within range or no change or high), unless there is no change in their category. Participants whose laboratory value category was unchanged (e.g., High to High), or whose value became within range, were recorded in To within Range or No Change (NC) category. Participants were counted twice if participant had values that changed To Low and To High, so the percentages may not add to 100%.

  Up to Day 193

• Part A: Number of Participants With Worst Case Chemistry Results Relative to Normal Range Post-Baseline Relative to Baseline

  Clinical chemistry parameters assessed were alanine aminotransferase(ALT)(\<10 or \>50 international units per liter\[IU/L\]),alkaline phosphatase(ALP)(\<40 or \>129 IU/L),aspartate aminotransferase(AST)(\<0 or \>37 IU/L),cholesterol(\<2.3 or \>4.9 mmol/L),direct bilirubin(DB)(\<0 or \>5 micromoles\[mcmol\]/L),high density lipoprotein (DL)(\<0.9 or \>1.5 mmol/L),C-reactive protein(CRP)(\<0.0 or \>5.0mg/liter),low DL(\<0 or \>3.0 mmol/L), total bilirubin (\<0 or \>20 mcmol/L),total protein(\<63 or \>83 grams/L),triglycerides(\<0 or \>2.3 mmol/L) and blood urea nitrogen(BUN)(\<4.76 or \>23.24 mg/deciliter).Participants were counted in worst case category that their value changes to (low, normal or high), unless there is NC in their category.Participants whose laboratory value category was unchanged(e.g.,High to High) or whose value became normal, are recorded in "To Normal or NC" category.Participants were counted twice if participant had values that changed To Low and To High, so percentages may not add to 100%.

  Up to Day 193

• Part B: Number of Participants With Worst Case Chemistry Results by PCI Criteria Post-Baseline Relative to Baseline

  Blood samples were planned to be collected to analyze the chemistry parameters.

  Up to Day 30

• Part B: Number of Participants With Worst Case Chemistry Results Relative to Normal Range Post-Baseline Relative to Baseline

  Blood samples were planned to be collected to analyze the chemistry parameters.

  Up to Day 30

• Part C: Number of Participants With Worst Case Chemistry Results by PCI Criteria Post-Baseline Relative to Baseline

  Blood samples were collected for analysis of chemistry parameters. PCI ranges were \<30 g/L (albumin), \<2 or \>2.75 mmol/L (calcium), \>1.3\* ULN mmol/L (creatinine), \<3 or \>9 mmol/L (glucose), \<3 or \>5.5 mmol/L (potassium), and \<130 or \>150 mmol/L (sodium). Participants were counted in worst case category that their value changes to (low, within range or no change or high), unless there is no change in their category. Participants whose laboratory value category was unchanged (e.g., High to High), or whose value became within range, were recorded in To within Range or No Change category. Participants were counted twice if participant had values that changed To Low and To High, so the percentages may not add to 100%.

  Up to Day 28

• Part C: Number of Participants With Worst Case Chemistry Results Relative to Normal Range Post-Baseline Relative to Baseline

  Clinical chemistry parameters assessed were ALT (\<10 or \>50 IU/L), ALP (\<40 or \>129 IU/L), AST (\<0 or \>37 IU/L), cholesterol (\<2.3 or \>4.9 mmol/L), DB (\<0 or \>5 mcmol/L), high DL (\<0.9 or \>1.5 mmol/L), CRP (\<0.0 or \>5.0 mg/liter), low DL (\<0 or \>3.0 mmol/L), total bilirubin (\<0 or \>20 mcmol/L), total protein (\<63 or \>83 grams/L), triglycerides (\<0 or \>2.3 mmol/L) and BUN (\<4.76 or \>23.24 mg/deciliter). Participants were counted in worst case category that their value changes to (low, normal or high), unless there is NC in their category. Participants whose laboratory value category was unchanged (e.g., High to High) or whose value became normal, are recorded in "To Normal or NC" category. Participants were counted twice if participant had values that changed To Low and To High, so percentages may not add to 100%.

  Up to Day 28

• Part A: Number of Participants With Worst Case Hematology Results by PCI Criteria Post-Baseline Relative to Baseline

  Blood samples collected for analysis of hematology parameters. PCI ranges were \>0.54 proportion of red blood cells in blood (hematocrit), \>180 grams/liter (hemoglobin), \<0.8 \*10\^9 cells/L (lymphocyte count), \<1.5 \*10\^9 cells/L (total absolute neutrophil count \[ANC\]), \<100 or \>550 \*10\^9 cells/L (platelet count), and \<3 or \>20\*10\^9 cells/L (white blood cell \[WBC\] count). Participants were counted in worst case category that their value changes to (low, within range or no change or high), unless there is no change in their category. Participants whose laboratory value category was unchanged (e.g., High to High), or whose value became within range, were recorded in To within Range or No Change category. Participants were counted twice if the participant had values that changed To Low and To High, so the percentages may not add to 100%.

  Up to Day 193

• Part A: Number of Participants With Worst Case Hematology Results Relative to Normal Range Post-Baseline Relative to Baseline

  Hematology parameters assessed were activated partial thromboplastin time (APTT) (\<25 or \>37 seconds), basophil count (\<0.0 or \>0.1\*10\^9 cells/L), eosinophil count (\<0.0 or \>0.4\*10\^9 cells/L), fibrinogen (\<1.5 or \>4.0 g/L), mean corpuscle hemoglobin (MCH) (\<26.0 or \>33.5 picogram), mean corpuscle volume (MCV) (\<80 or \>99 femtoliter), monocyte count (\<0.2 or \>1.0\*10\^9 cells/L), prothrombin time (PT) (\<10 or \>12 seconds), red blood cell (RBC) count (\<4.4 or \>5.8\*10\^12 cells/L) and reticulocyte count (\<0.38 or \>2.64 percentage of reticulocytes). Participants were counted in worst case category that their value changes to (low, normal or high), unless there is NC in their category. Participants whose laboratory value category was unchanged (e.g., High to High) or whose value became normal, are recorded in "To Normal or NC" category. Participants were counted twice if participant had values that changed To Low and To High, so percentages may not add to 100%.

  Up to Day 193

• Part B: Number of Participants With Worst Case Hematology Results by PCI Criteria Post-Baseline Relative to Baseline

  Blood samples were planned to be collected to analyze hematology parameters.

  Up to Day 30

• Part B: Number of Participants With Worst Case Hematology Results Relative to Normal Range Post-Baseline Relative to Baseline

  Blood samples were planned to be collected to analyze hematology parameters.

  Up to Day 30

• Part C: Number of Participants With Worst Case Hematology Results by PCI Criteria Post-Baseline Relative to Baseline

  Blood samples were collected for analysis of hematology parameters. PCI ranges were \>0.54 proportion of red blood cells in blood (hematocrit), \>180 grams/liter (hemoglobin), \<0.8\*10\^9 cells/L (lymphocyte count), \<1.5\*10\^9 cells/L (total ANC), \<100 or \>550\*10\^9 cells/L (platelet count), and \<3 or \>20\*10\^9 cells/L (WBC count). Participants were counted in worst case category that their value changes to (low, within range or no change or high), unless there is no change in their category. Participants whose laboratory value category was unchanged (e.g., High to High), or whose value became within range, were recorded in To within Range or No Change category. Participants were counted twice if the participant had values that changed To Low and To High, so the percentages may not add to 100%.

  Up to Day 28

• Part C: Number of Participants With Worst Case Hematology Results Relative to Normal Range Post-Baseline Relative to Baseline

  Hematology parameters assessed were APTT (\<25 or \>37 seconds), basophil count (\<0.0 or \>0.1\*10\^9 cells/L), eosinophil count (\<0.0 or \>0.4\*10\^9 cells/L), fibrinogen (\<1.5 or \>4.0 g/L), MCH (\<26.0 or \>33.5 picogram), MCV (\<80 or \>99 femtoliter), monocyte count (\<0.2 or \>1.0\*10\^9 cells/L), PT (\<10 or \>12 seconds), RBC count (\<4.4 or \>5.8\*10\^12 cells/L) and reticulocyte count (\<0.38 or \>2.64 percentage of reticulocytes). Participants were counted in worst case category that their value changes to (low, normal or high), unless there is NC in their category. Participants whose laboratory value category was unchanged (e.g., High to High) or whose value became normal, are recorded in "To Normal or NC" category. Participants were counted twice if participant had values that changed To Low and To High, so percentages may not add to 100%.

  Up to Day 28

• Part A: Number of Participants With Abnormal Urinalysis Parameters

  Urine samples were collected from participants for analyzing the following urine parameters: potential of hydrogen (pH) and glucose, protein, blood, ketones, bilirubin, urobilinogen, nitrite, leukocytes levels by dipstick. Urine samples showing any abnormality were sent for microscopic examination to detect the presence of RBC, WBC, cellular casts, granular casts, hyaline casts, and were counted as cells per high-power field (cells/HPF). Number of participants with abnormal urinalysis result by microscopic examination have been presented.

  Up to Day 193

• Part B: Number of Participants With Abnormal Urinalysis Parameters

  Urine samples were planned to be collected to analyze urine parameters.

  Up to Day 30

• Part C: Number of Participants With Abnormal Urinalysis Parameters

  Urine samples were collected from participants for analyzing the following urine parameters: pH and glucose, protein, blood, ketones, bilirubin, urobilinogen, nitrite, leukocytes levels by dipstick. Urine samples showing any abnormality were sent for microscopic examination to detect the presence of RBC, WBC, cellular casts, granular casts, hyaline casts, and were counted as cells/HPF. Number of participants with abnormal urinalysis result by microscopic examination have been presented.

  Up to Day 28

• Part A: Number of Participants With Worst Case Vital Sign Results by PCI Criteria Post-Baseline Relative to Baseline

  Vital signs included systolic blood pressure(SBP), diastolic blood pressure(DBP), heart rate, respiratory rate and body temperature and were measured in a semi-supine position after 5 minutes rest. PCI ranges were, SBP (millimeters of mercury \[mmHg\]): \<85 (low) or \>160 (high), DBP (mmHg): \<45 (low) or \>100 (high), heart rate (beats per minute): \<40 (low) or \>110 (high), respiration rate (breaths per minute): \<11(low) or \>20(high) and body temperature (degrees Celsius) \<35.5 (low) or \>38.0 (high). Participants were counted in the worst case category that their value changes to (low, within range or no change, or high), unless there is no change in their category. Participants whose vital signs value category was unchanged (e.g., High to High), or whose value became within range, were recorded in the "To within Range or No Change" category. Participants were counted twice if the participant had values that changed "To Low" and "To High", so the percentages may not add to 100%.

  Up to Day 193

• Part B: Number of Participants With Worst Case Vital Sign Results by PCI Criteria Post-Baseline Relative to Baseline

  Vital signs were planned to be measured in a semi-supine position after 5 minutes of rest.

  Up to Day 30

• Part C: Number of Participants With Worst Case Vital Sign Results by PCI Criteria Post-Baseline Relative to Baseline

  Vital signs included SBP, DBP, heart rate, respiratory rate and body temperature and were measured in a semi-supine position after 5 minutes rest. PCI ranges were, SBP (mmHg): \<85 (low) or \>160 (high), DBP (mmHg): \<45 (low) or \>100 (high), heart rate (beats per minute): \<40 (low) or \>110 (high), respiration rate (breaths per minute): \<11 (low) or \>20 (high) and body temperature (degrees Celsius) \<35.5 (low) or \>38.0 (high). Participants were counted in the worst case category that their value changes to (low, within range or no change, or high), unless there is no change in their category. Participants whose vital signs value category was unchanged (e.g., High to High), or whose value became within range, were recorded in the "To within Range or No Change" category. Participants were counted twice if the participant had values that changed "To Low" and "To High", so the percentages may not add to 100%.

  Up to Day 49

• Part A: Number of Participants With Worst Case Post-Baseline Abnormal Electrocardiogram (ECG) Findings

  Twelve lead ECGs were obtained using an ECG machine that automatically calculated the heart rate and measured PR, QRS, QT, and QT interval corrected using the Fridericia's formula (QTcF) intervals. Abnormal findings were categorized as clinically significant (CS) and not clinically significant (NCS). Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for number of participants with worst case post-Baseline abnormal ECG findings have been presented.

  Up to Day 193

• Part B: Number of Participants With Worst Case Post-Baseline Abnormal ECG Findings

  Twelve lead ECGs were planned to be performed to measure PR interval, QRS duration, QT interval and QTcF.

  Up to Day 30

• Part C: Number of Participants With Worst Case Post-Baseline Abnormal ECG Findings

  Twelve lead ECGs were obtained using an ECG machine that automatically calculated the heart rate and measured PR, QRS, QT, and QTcF intervals. Abnormal findings were categorized as clinically significant and not clinically significant. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for number of participants with worst case post-Baseline abnormal ECG findings have been presented.

  Up to Day 28

Secondary Outcomes (48)

• Part A: Plasma Concentrations of GSK3358699

  Day 1: Pre-dose, 15 minutes, 30 minutes, 1, 2, 4, 6, 8, 12, 24 and 48 hours post-dose in each treatment period

• Part B: Plasma Concentrations of GSK3358699

  Day 1: Pre-dose, 15 minutes, 30 minutes, 1, 2, 4, 6, 8, 12, 24 and 48 hours post-dose in each treatment period

• Part C: Plasma Concentrations of GSK3358699

  Day 1: Pre-dose, 15 minutes, 30 minutes, 1, 2, 4, 6, 8, 12 and 24 hours; Days 4, 8 and 12: Pre-dose; Day 14: Pre-dose, 15 minutes, 30 minutes, 1, 2, 4, 6, 8, 12, 24 and 48 hours post-dose

• Part A: Area Under the Plasma Concentration Curve From Time Zero to Last Time of Quantifiable Concentration (AUC[0-t]) of GSK3358699

  Day 1: Pre-dose, 15 minutes, 30 minutes, 1, 2, 4, 6, 8, 12, 24 and 48 hours post-dose in each treatment period

• Part B: AUC(0-t) of GSK3358699

  Day 1: Pre-dose, 15 minutes, 30 minutes, 1, 2, 4, 6, 8, 12, 24 and 48 hours post-dose in each treatment period

Study Arms (8)

GSK3358699, Part A, Cohort 1

EXPERIMENTAL

Part A will comprise of 4 TPs. The subjects in this cohort will receive GSK3358699, as single escalation dose, during TP (1 to 3) with planned escalated doses as 1 mg, 10 mg and 35 mg. Dose of 1 mg will be given as solution and doses of 10 mg and 35 mg, will be given as a capsule. Each TP will be of 1 day and separated by a washout Period of 14-days. Post completion of the dose-escalation TPs, an additional dosing TP 4 will be included where the subjects from each TP (1 to 3), will receive control blisters induced on forearm (0.2 % cantharidin) at Day -10. The subjects in cohort 1 will receive GSK3358699 at a dose level already given in TP 1-3, and will then receive an intravenous in vivo LPS challenge at a dose not exceeding 0.75 nanogram per kilogram post administration of GSK3358699. The subjects will then have blisters induced on the forearm approximately 20 minutes after the challenge. LPS dose will be based on data of study 207654 (NCT03306589).

Drug: GSK3358699; Biological: LPS; Other: Cantharidin

GSK3358699, Part A, Cohort 2

EXPERIMENTAL

Part A will comprise of 4 TPs. The subjects in this cohort will receive GSK3358699, as single escalation dose during TP (1 to 3) with planned escalated doses as 3 mg, 20 mg and 45 mg. Dose of 3 mg will be given as solution and that of 20 and 45 mg, as capsule. Each TP will be of 1 day and separated by a washout Period of 14-days. Post completion of the dose-escalation TPs, an additional dosing TP 4 will be included where the subjects from each TP (1 to 3), will receive control blisters induced on forearm (0.2 % cantharidin) at Day -10. The subjects in cohort 2 will receive GSK3358699 at a dose level already given in TP 1-3, and will then receive 60 microgram per meter\^2 of in vivo GM CSF challenge as an intravenous infusion during TP 4, post administration of GSK3358699. The subjects will then have blisters induced on the forearm approximately 20 minutes after the challenge GM-CSF infusion. GM-CSF dose will be based on data of study 207654 (NCT03306589).

Drug: GSK3358699; Biological: GM-CSF; Other: Cantharidin

Placebo, Part A, Cohort 1

PLACEBO COMPARATOR

Part A will comprise of 4 TPs. The subjects in this cohort will receive matching Placebo solution to the study drug GSK3358699 solution for 1 mg and a matching placebo capsule to the study drug GSK3358699, 10 mg and 35 mg capsule, during TP (1 to 3). Each TP will be of 1 day and separated by a washout Period of 14-days. Post completion of the dose-escalation TPs, an additional dosing TP 4 will be included where the subjects from each TP (1 to 3), will receive control blisters induced on forearm (0.2 % cantharidin) at Day -10. The subjects in cohort 1 will receive Placebo at a dose level already given in TP 1-3, and will then receive an intravenous in vivo LPS challenge at a dose not exceeding 0.75 nanogram per kilogram post administration of Placebo. The subjects will then have blisters induced on the forearm approximately 20 minutes after the challenge. LPS dose will be based on data of study 207654 (NCT03306589).

Drug: Placebo; Biological: LPS; Other: Cantharidin

Placebo, Part A, Cohort 2

PLACEBO COMPARATOR

Part A will comprise of 4 TPs. The subjects in this cohort will receive matching Placebo solution to the study drug GSK3358699 solution for 3 mg and a matching placebo capsule to the study drug GSK3358699, for 20 and 45 mg capsule, during TP (1 to 3). Each TP will be of 1 day and separated by a washout Period of 14-days. Post completion of the dose-escalation TPs, an additional dosing TP 4 will be included where the subjects from each TP (1 to 3), will receive control blisters induced on forearm (0.2 % cantharidin) at Day -10. The subjects in cohort 2 will receive Placebo at a dose level already given in TP 1-3, and will then receive 60 microgram per meter\^2 of in vivo GM CSF challenge as an intravenous infusion during TP 4, post administration of Placebo. The subjects will then have blisters induced on the forearm approximately 20 minutes after the challenge GM-CSF infusion. GM-CSF dose will be based on data of study 207654 (NCT03306589).

Drug: Placebo; Biological: GM-CSF; Other: Cantharidin

Part B, GSK3358699 under Fasted followed by Fed conditions

EXPERIMENTAL

The subjects in this arm will receive single oral dose of GSK3358699, at a dose level evaluated in Part A, under fasted condition in TP1 followed by fed condition in TP2. This cohort intended to evaluate the effect of food.

Drug: GSK3358699

Part B, GSK3358699 under Fed followed by Fasted conditions

EXPERIMENTAL

The subjects in this arm will receive single oral dose of GSK3358699, at a dose level evaluated in Part A, under fed condition in TP1 followed by fasted condition in TP2. This cohort intended to evaluate the effect of food.

Drug: GSK3358699

GSK3358699, Part C

EXPERIMENTAL

The dose level for the first cohort in Part C will be decided following completion of Part A of the study for GSK3358699. The subjects in this arm will constitute 3 cohorts each (cohort 4 to 6), where the subjects will receive GSK3358699, as one repeat dose treatment once daily for 14-consecutive days. Subjects will have control blisters induced on the forearm (0.2% cantharidin) on Day -10. On the Day 14 of each cohort, each subject will receive an intravenous in vivo LPS challenge at a dose not exceeding 0.75 nanogram per kilogram or an intravenous infusion of GM-CSF, in vivo as 60 microgram per meter\^2. The administration of LPS or GM CSF will be followed by blister induction on forearm (0.2 % cantharidin).

Drug: GSK3358699; Biological: GM-CSF; Biological: LPS; Other: Cantharidin

Placebo, Part C

PLACEBO COMPARATOR

The subjects in this cohort will receive a matching placebo to GSK3358699, Part C, as a single oral dose once daily for 14 consecutive days. The subjects in this arm will constitute 3 cohorts each (cohort 4 to 6), where the subjects will receive placebo, as one repeat dose treatment once daily for 14-consecutive days. Subjects will have control blisters induced on the forearm (0.2% cantharidin) on Day -10. On the Day 14 of each cohort, each subject will receive an intravenous in vivo LPS challenge at a dose not exceeding 0.75 nanogram per kilogram or an intravenous infusion of GM-CSF, in vivo as 60 microgram per meter\^2. The administration of LPS or GM CSF will be followed by blister induction on forearm (0.2 % cantharidin).

Drug: Placebo; Biological: GM-CSF; Biological: LPS; Other: Cantharidin

Interventions

Placebo DRUG

Placebo will be administered as a matching oral solution or matching capsule to study drug GSK3358699, during Part A and C once daily

Placebo, Part A, Cohort 1; Placebo, Part A, Cohort 2; Placebo, Part C

GSK3358699 DRUG

GSK3358699, will be administered from 1 mg to 45 mg as an oral solution (1 to 10 mg) or as a capsule (3 to 45 mg), in Part A, B and Part C once daily.

GSK3358699, Part A, Cohort 1; GSK3358699, Part A, Cohort 2; GSK3358699, Part C; Part B, GSK3358699 under Fasted followed by Fed conditions; Part B, GSK3358699 under Fed followed by Fasted conditions

GM-CSF BIOLOGICAL

The GM-CSF will be administered as an intravenous infusion to subjects as 60 microgram per meter\^2 in Part A (Day 1) and Part C (Day 14).This will be administered for 2 hours approximately, no later than 24 hours post -dose of the GSK3358699 or placebo in Part C

GSK3358699, Part A, Cohort 2; GSK3358699, Part C; Placebo, Part A, Cohort 2; Placebo, Part C

LPS BIOLOGICAL

LPS will be administered as an intravenous injection to subjects not exceeding 0.75 nanogram per kilogram in Part A (Day 1) and Part C (Day 14). This will be administered no later than 24 hours post -dose of the GSK3358699 or placebo in Part C.

GSK3358699, Part A, Cohort 1; GSK3358699, Part C; Placebo, Part A, Cohort 1; Placebo, Part C

Cantharidin OTHER

This will be applied as a topical application with 0.7% cantharidin liquid which will be diluted with acetone to 0.2%.

GSK3358699, Part A, Cohort 1; GSK3358699, Part A, Cohort 2; GSK3358699, Part C; Placebo, Part A, Cohort 1; Placebo, Part A, Cohort 2; Placebo, Part C

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: male
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

Sponsors & Collaborators

• GlaxoSmithKline: lead

Study Sites (1)

GSK Investigational Site

Cambridge, CB2 2GG, United Kingdom

Location

Related Publications (1)

• Brown JA, Bal J, Simeoni M, Williams P, Mander PK, Soden PE, Daga S, Fahy WA, Wong GK, Bloomer JC, Erwig L, Cui Y, Fernando D, Carnaghan H, Banham-Hall EJ, Hopkins S, Davis BG, Oliveira JJD, Prinjha RK. A randomized study of the safety and pharmacokinetics of GSK3358699, a mononuclear myeloid-targeted bromodomain and extra-terminal domain inhibitor. Br J Clin Pharmacol. 2022 May;88(5):2140-2155. doi: 10.1111/bcp.15137. Epub 2021 Dec 18.

  PMID: 34773923 DERIVED

MeSH Terms

Conditions

Arthritis, Rheumatoid

Interventions

Granulocyte-Macrophage Colony-Stimulating Factor; Cantharidin

Condition Hierarchy (Ancestors)

Arthritis; Joint Diseases; Musculoskeletal Diseases; Rheumatic Diseases; Connective Tissue Diseases; Skin and Connective Tissue Diseases; Autoimmune Diseases; Immune System Diseases

Intervention Hierarchy (Ancestors)

Colony-Stimulating Factors; Glycoproteins; Glycoconjugates; Carbohydrates; Hematopoietic Cell Growth Factors; Cytokines; Intercellular Signaling Peptides and Proteins; Peptides; Amino Acids, Peptides, and Proteins; Proteins; Biological Factors; Benzofurans; Heterocyclic Compounds, 2-Ring; Heterocyclic Compounds, Fused-Ring; Heterocyclic Compounds

Results Point of Contact

• Title: GSK Response Center
• Organization: GlaxoSmithKline

GSKClinicalSupportHD@gsk.com

866-435-7343

Study Officials

• GSK Clinical Trials

  GlaxoSmithKline

  STUDY DIRECTOR

Publication Agreements

• PI is Sponsor Employee: No
• Restriction Type: OTHER
• Restrictive Agreement: Yes

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: RANDOMIZED
• Masking: DOUBLE
• Who Masked: PARTICIPANT, INVESTIGATOR
• Masking Details: This will be a double blind (sponsor open) study with respect to allocation of GSK3358699 or placebo to subjects. All site staff will be blinded with the exception of un-blinded pharmacists. Investigators will be un-blinded with respect to the LPS and GM-CSF allocation. The food effect part of the study (Part B) will be open-label
• Purpose: TREATMENT
• Intervention Model: CROSSOVER
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Model Details: Study will be conducted as Part A, B and C. Part A will consist of 2-interlocking cohorts, where each subject will receive maximum 2-single ascending oral doses of GSK3358699 and 1 dose of placebo, in Treatment Periods (TP) 1 to 3. In TP 4 subjects will receive GSK3358699, dose evaluated in TP (1 to 3) or placebo, with cantharidin induced blisters and either LPS or GM-CSF in vivo challenge. Part B will comprise of single cohort taking part in two-way cross over, with open label phase where each subject will receive single oral dose of GSK3358699 (based on Part A), under fed and fasted conditions in each TP. Part C will consist of 3 cohorts with multiple ascending doses, with every cohort having one repeat dose TP with 14 days of daily dosing of either GSK3358699 or placebo. Subjects on Day 14 will receive cantharidin induced blisters with either LPS or GM-CSF in vivo challenge. An optional, cohort 7 may be included for further dose evaluation of GSK3358699 or alternate dosing schedule.

Study Record Dates

• First Submitted: February 2, 2018
• First Posted: February 9, 2018
• Study Start: March 13, 2018
• Primary Completion: May 2, 2019
• Study Completion: May 2, 2019
• Last Updated: December 2, 2020
• Results First Posted: December 2, 2020

Record last verified: 2020-10

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP, ICF, CSR
• Time Frame: IPD will be made available, within 6 months of publishing the results of the primary endpoints of the study.
• Access Criteria: Access is provided, after a research proposal is submitted and has submitted approval from the Independent Review Panel and after a Data Sharing Agreement is in place. Access is provided, for an initial period of 12 months but an extension can be granted, when justified for up to another 12 months.

Locations

GB (1)